Improvement in elevated railways



4 Sheets-Sheet 1.

1 Elevated Railway. Nb.1 06",056. Patented Aug. 2, 1870.'

7' 4 j 4 SheetS-Sheet 2.

J. M. HANNAHS.

Elevated Railway. No.106,056. v Patented Aug. 2, 1870.

1 4 SheetsfSheet 3. J. M. HANNAHS. Y

Elevated Railway ;1 No .106, 056. I Patented Aug. 2,1870,

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JAMES M. HAnn' Hsfor CHICAGO, ILLINOIS.

" 12mm Patent -'No. 106,056, dated Ahgust2, 1870.

IMPROVEMEIllT IN ELEVATED RAILWIYS.

The schednle reterrad to'in'tlress'tecrers Patent and making art of the same.

, To all whom it may concern: I

Be known that I, JAMES M. HANNAHS, of Chicage, in the county of Cook and State of Illinois,

"have invented certain Improvements in Elevated Railways, of which the following is a specification, reference being bad to theaccompanying-drawing.

. My invention relates to elevated'railways for towns,

cities, parks, and-like-places, and consists of broad parallel girders, constructed, arranged, and supported, in: connection'with a railway-track, in a novel manner, upon a single or double row of metallic columns, as hereinafter explained.

In the drawingv I Figure-1 isa sideelevation of my railway, nionnted on a series oi single columns;

- Figure 2 is an-end view of the same;

Figure 3isan'end viewof my railway, mounted on two rows of columns; and r ,Fignres 4, 5, and 6 are views of pants detached.

- In the construction ofthis railway netallic cob. u'mns A, of suitable-size-and strength, with abroad base,.a-, are placed on a-stone or other firm foundation.

.When a single row is used, as shown in figs. 1 and 2, each column is provided 'with'horizontal arms (1, extending at'right'angles to the line of the columns,- nnd at a proper height from the street, so as not to be an obstruction. I

They are made; strong, and may he further strengthened by braces b, as shown in the same figures,- and are also long'enough to support a" 'railway-' track on each side of the column.

on each of these arms arefastened metallic plates 'F F, two on each arm, and at equal distances apart,

by bolts, or in janysecure manner, and upon them are arranged two parallel lines of girders B B, with their ends meeting on the plates, and firmly secured to them. a

These girders have broad flanges on their under side, and arein height, on their sides, nearly equal to the. diameter oftthe wheels of the cars,'as clearly shown in fig. 1, their form being more clearly shown in Figure 8, and. they are placed far enough apart to form an iron inclosure for a railway.

, Cross-bars D D connect them together, which are placed at proper distance apart to support a-floor, E.

To the inner sides of these girders are bolted rails G, with a flange turned inward, for thecars to run upon, as shown in figs. 2 and ,8. 1

To support and strengthen these girders, I make a suspension truss, as follows, to wit:

Connecting-plates H H, provided \vith'flanges,

turned up, are bolted to the upper edge and ends. of each girder, as shown in-fig. 1, their form being more They are theu drawn together by bolts I passing. through their flanges, as shown in figs. 4 and 5. As these boltsare tightened, theyserve to connect the girders firmly so as to form a rigid continuous line.

The plates on the two ends ,of each girder are then connected byv truss-rods K passing nnderjthe crossbars D D, and arranged as shown in fig. 1.

These rods may be provided with any of theordinary means for tightening them. Y

As the girders are rigidly connected by-the plates H H, it willbe seen that, it one of the truss-rods breaks, the girder, which it is mainly designed to support, .will still be held securely at its-end by means of" its connectiomthrough the plates ,H H, with the next girder and truss-rod; orshould a'girder be broken-or be disconnected from the plates H H,it would still be upheld by the truss-rods acting as a suspension-cm ble.

'lhesegirders are also supported by tension-rods or= cables L L, stretched from or near the tops of columns -M', which rise above the main columns A, to crossbars D under the girders, as shown infig. 1. They are further supported by bolsters N N, rest ing upon the topof the main Ql I i.Ai31l lf ing on either sideat right angles to it,- andparallel with the girders, as shown in dotted lines at, fig. 1.

These bolsters have cross-bars D" D1bo lted to the under sides "of their ends, so as to extendrnnder' the Ina-in girders.

Asthe rails on which the cars are iIO l'llll are placed either next to or very close to-the' inner sides of the girders, it is obvious that these girders, besides furnishing the immediate support of the .railway will also, by reason of their high sides, form an iron-incloslure, so as to prevent the cars from running ed on either side.v v I v When desired for use in.narro w streets,two rows of columns may be arranged, as shown in figs. 1 and 3.

In this case they are placed along the outer edge of the opposite sidewalks, the columns opposite each other being connected by an arched girder, P, and tie-- rods f and'g, as shown in ,fig. 3. i

The girders. B B, as above described, with the plates F, connecting' -plate's'H H, truss-rods K, columns M,

tension-rods or cables L, bolsters N, 860., are then arranged on these arches, as shown in fig. 3.

Having thus described my invention,

What I claim is- I.v An elevated railway, mounted on a single or a double row of columns, and consisting of the .trnssed girders B B, with the rail 0 attached, when constructed and arranged suhstantiallyas herein dc.

scribed.

2. In combination, the girders B. B, connectingplates H H, and the truss-rods K K, when constructed and arranged substantially as herein described, and for the purpose-setfort-h.

JAMES M. HANNAHS.

Witnesses:

0. D. Wmmu, WM. H. H. GRAY- 

